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  1. WiredTiger
  2. WT-6664

Cache eviction causes high latency during py-tpcc.

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major - P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 5.0 Required
    • Component/s: None
    • Labels:
      None
    • Story Points:
      1
    • Sprint:
      Storage - Ra 2020-10-05, Storage - Ra 2020-10-19, Storage - Ra 2020-11-02

      Description

      SERVER-50749 identifies some performance problems when loading data in py-tpcc.

      In attempting to reproduce the problem, I saw some high latency  insert operations that seem to be caused by WT cache eviction pressure.

      In particular, during a 25 minute test run, I saw 15 operations of 16+ seconds. All of these stalls correlated with aggressive eviction, high numbers of pages evicted by application threads, and evictions requiring restoration.

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              Assignee:
              sulabh.mahajan Sulabh Mahajan
              Reporter:
              keith.smith Keith Smith
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                Dates

                Created:
                Updated: